Clinical application of transnasal tracheal intubation with difficult airway guided by flexible ureteroscope

Objective To observe the clinical effect of transnasal tracheal intubation with difficult airway guided by flexible ureteroscope. Methods Transnasal tracheal intubation was performed with flexible ureteroscope in 42 patients with difficult airway. Mean arterial pressure(MAP), heart rate(HR) and SpO2 were recorded at 4 time points: before induction of anesthesia, just befote intubation, just after intubation and 5 minutes after intubation. The success rate of intubation, intubation time(since the intubation operation to succeed) and the complications(cough, laryngeal spasm, agitation, respiratory depression, SpO2 90%, arrhythmia, etc.) were observed. Postoperative follow-up of patients were recorded with oropharyngeal and airway intubation injury. Results The one-time success rate of intubation was 90.5%, and the two-time success rate was 100%. The intubation time was 1~8 minutes and the average time of intubation was about 4.2 minutes. SpO2 in the intubation process was maintained at 91%~100%, hemodynamics remained in the normal range. There were no complications such as fierce cough, laryngeal spasm, agitation and respiratory depression. Postoperative follow-up of patients were found with no hoarseness, obvious pharyngeal discomfort and catheter related injury. Conclusion Transnasal tracheal intubation with difficult airway guided by flexible ureteroscope is safe and feasible, simple and effective, which could be widely used in basic hospitals.